At sufficiently low temperatures, magnetic materials often enter correlated phases hosting
collective, coherent magnetic excitations such as magnons or triplons. Drawing on the …

The spontaneous magnetic orders arising in ferro-, ferri-and antiferromagnets stem from
various magnetic interactions. Depending on the interplay and competition among the …

In this work, we exhaust all the spin space symmetries, which fully characterize collinear,
noncollinear, and commensurate spiral as well as incommensurate spiral magnetism, etc …

In two-dimensional honeycomb ferromagnets, bosonic magnon quasiparticles (spin waves)
may either behave as massless Dirac fermions or form topologically protected edge states …

The quantum anomalous Hall effect is defined as a quantized Hall effect realized in a system
without an external magnetic field. The quantum anomalous Hall effect is a novel …

There is great interest in finding materials possessing quasiparticles with topological
properties. Such materials may have novel excitations that exist on their boundaries which …

It has been recently shown that in the Heisenberg (anti) ferromagnet on the honeycomb
lattice, the magnons (spin wave quasipacticles) realize a massless two-dimensional (2D) …

Despite great interest in the quantum anomalous Hall phase and its analogs, all
experimental studies in electronic and bosonic systems have been limited to a Chern …

Dissipation in mechanics, optics, acoustics, and electronic circuits is nowadays recognized
to be not always detrimental but can be exploited to achieve non-Hermitian topological …

Pursuing topological phases in natural and artificial materials is one of the central topics in
modern physical science and engineering. In classical magnetic systems, spin waves (or …